61 lines
2.0 KiB
C
61 lines
2.0 KiB
C
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/* SPDX-License-Identifier: GPL-2.0+ */
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/* Generic I/O port emulation.
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*
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* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*/
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#ifndef __ASM_GENERIC_PCI_IOMAP_H
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#define __ASM_GENERIC_PCI_IOMAP_H
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struct pci_dev;
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#ifdef CONFIG_PCI
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/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
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extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
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extern void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max);
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extern void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
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unsigned long offset,
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unsigned long maxlen);
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extern void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar,
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unsigned long offset,
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unsigned long maxlen);
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extern void pci_iounmap(struct pci_dev *dev, void __iomem *);
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/* Create a virtual mapping cookie for a port on a given PCI device.
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* Do not call this directly, it exists to make it easier for architectures
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* to override */
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#ifdef CONFIG_NO_GENERIC_PCI_IOPORT_MAP
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extern void __iomem *__pci_ioport_map(struct pci_dev *dev, unsigned long port,
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unsigned int nr);
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#elif !defined(CONFIG_HAS_IOPORT_MAP)
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#define __pci_ioport_map(dev, port, nr) NULL
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#else
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#define __pci_ioport_map(dev, port, nr) ioport_map((port), (nr))
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#endif
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#elif defined(CONFIG_GENERIC_PCI_IOMAP)
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static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
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{
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return NULL;
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}
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static inline void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max)
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{
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return NULL;
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}
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static inline void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
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unsigned long offset,
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unsigned long maxlen)
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{
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return NULL;
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}
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static inline void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar,
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unsigned long offset,
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unsigned long maxlen)
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{
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return NULL;
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}
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static inline void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
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{ }
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#endif
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#endif /* __ASM_GENERIC_PCI_IOMAP_H */
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